01 - Warm the heavy cream and butter in a small saucepan over medium heat until it just begins to simmer, then remove from heat.
02 - Place chopped semi-sweet chocolate in a heatproof bowl, pour the hot cream and butter mixture over it, let stand for 2 minutes, then stir until completely smooth.
03 - Mix in molasses, ground ginger, cinnamon, nutmeg, cloves, salt, and vanilla extract until fully blended.
04 - Cover and refrigerate the mixture for at least 1 hour, until firm enough to handle.
05 - Scoop portions using a melon baller or spoon and roll into 1-inch diameter balls by hand. Arrange on a parchment-lined tray.
06 - Place the rolled truffles in the refrigerator for 15 minutes to firm up.
07 - Gently melt the coating chocolate in a heatproof bowl over simmering water or in 20-second microwave bursts, stirring until smooth.
08 - Dip each chilled truffle into the melted chocolate, allowing excess to drip off, and return to the tray.
09 - Sprinkle immediately with crushed gingerbread cookies, if desired.
10 - Allow truffles to set at room temperature or chill briefly before serving.